LoL.... Me too !!!! Call intercom.....response = radio on. NO.... call intercom, response = radio on..... NO for ****s sake, and so it goes on till I'm so wound up and turn the whole kin thing off before I crash !!!!
I have Scala G9X as well and, in general, I find it a piece of total crap. Unreliable on its own. Very unreliable when in a group, dropping off, back on, no rhyme nor reason to it - just incredibly annoying and ineffective. Avoid.
Another Vote for Interphone 5, been using it for the last 3 years great piece of kit, on charge at the moment heading to tha Alps in the morning.